Haplochromis omnicaeruleus (Seehausen & Bouton 1998)

Mouth brooder with maternal parental care. Male defends territories throughout the depth range down to 6 m, but territorial densities are higher at 2-4 m depth. Brooding female also defends small territories around a cave between rock boulders at various water depths.

Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 9 - 11; Analspines: 3; Analsoft rays: 8 - 10; Vertebrae: 30

Inhabits rocky shores. Usually solitary. Feeds mainly on filamentous Chlorophyta and Cyanophyta where it inhabits gentle slopes and on Cyanophyta and diatoms on steep slopes.

Haplochromis omnicaeruleus is a species of cichlid endemic to Lake Victoria where it is known from the southeastern portion of the lake. This species can reach a length of 11.9 centimetres (4.7 in) SL.